Lift detection mechanism of mowing robot

A lift detection mechanism of a mowing robot, comprising:

• a fixed seat having an accommodation chamber therein;
• a wheel set including an axle penetrated into the fixed seat and rotated relative to the fixed seat and moved axially along an axial direction thereof, a wheel rotatably connected to the axle and located outside of the fixed seat, and a fixing member fixed to the axle and located in the accommodation chamber so as to be rotated together with the axle and moved axially together with the axle between a topmost position and a bottommost position;
• a location sensing unit including a movable member, a transmitter, and a receiver, the movable member being sleeved on the axle and the wheel and located in the accommodation chamber, the movable member being moved axially together with the fixing member and the fixing member being rotatable relative to the movable member, one of the transmitter and the receiver being disposed to the fixed seat, and the other of the transmitter and the receiver being disposed to the moveable member;
• and
• an elastic member providing an elastic force to move the movable member towards the bottommost position;
• wherein when the fixing member is located at the topmost position, the transmitter and the receiver correspond to each other, and when the fixing member is located at the bottommost position, the transmitter and the receiver are staggered with each other.